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What do you mean by the term critical frequency for sky wave propagation? Write down an expression for the critical frequency in terms of the maximum electron density of the ionosphere. Determine th
What are ortho and para forms of hydrogen? Discuss the effect of temperature on ortho and para hydrogens? What is the difference between intramolecular and intermolecular hydrogen bonding? Describe wi
What are the three fundamental units of a communication system?
Explain Faraday’s laws of electrolysis. Describe Stark – Einstein Law of photochemical equivalence.
What is an electric polarization of a dielectric? What is the consequence on capacitance of a capacitor when a dielectric of width ‘t’ is placed between the two plates of parallel plate
Three charges Q, + q and + q are placed at the vertices of a right angle isosceles triangle as shown below. Find out the magnitude of Q for which total electrostatic energy of the configuration is z
Why does the electric field in a dielectric decrease when it is placed in an external electric field?
Why can one ignore quantization of charge when dealing with the macroscopic charges?
What is the difference between macrominerals and trace elements? Write the major functions of any four trace elements? How is the standard free energy for chemical reactions different form the standar
Explain the origin of Stokes, Anti-Stokes and Rayleigh lines according to quantum theory of Raman spectrum. Discuss Born oppenheimer approximation.
What is osmotic pressure and how can it be calculated? With the help of an example explain the process of active transport by ion gradients. Name the types of enzymes and discuss the genetic control o
Write the important points about energy flow in an ecosystem. Describe the ecological effects of overgrazing and deforestation.
Explain the experiment of Avery, McLeod and McCarty. Why is it considered important in the field of Genetics? Write the genotypes and the phenotypes of the persons with Klinefelter Syndrome and Down S
Name the technique used for: Observation of DNA regions in chloroplast, Regeneration of plants from excised tissues of mature plants and Analysis of DNA structure.
Explain water potential? Describe the effect of solute, pressure and matric pressure on water potential.Explain the mechanism of control of stomata with suitable diagram.
Differentiate between simple and multiple polyembryony. ‘The phenomenon of embryogenesis is not necessarily confined to the reproductive cycle’. Justify the statement.
Compare between Homo habilis and Homo erectus. Discuss the evolution of culture in human beings. Describe how competition between two species leads to character displacement and ecological exclusion
What are coral reefs? Discuss their types and formation.Describe the different types of mouthparts found in insects with the help of well labeled diagrams.
Describe the phenomenon of ‘evolution of behaviour’. Describe territorial behaviour and dominance hierarchy. How are these behaviour helpful in organizing vertebrate social organizations?
Compare the families Arecaceae & Liliaceae with the reference to the following features: Leaf, inflorescence, flowers, androecium, gynoecium.
Discuss the salient lines of evolution of sporophytes in bryophytes. Cite examples and make their illustrations to support your discussion.
A stone is dropped from the top of a 95.0 m building. The second stone is dropped 0.75 s later. How far from the ground is this second stone when the first stone hits the ground?
A car accelerates uniformly from rest to a velocity of 101 km/h east in 8.0 s. What is the magnitude of its acceleration?
You jog once around an oval track in 6.0 minutes at an average speed of 1.7 mIs. a) Determine the distance travelled? b) Determine the displacement?
A small child throws a rock vertically downward with an initial velocity of 6.0 m/s from the top of a 225 m building. How far does the rock travel in the first 6.0 seconds of its drop?